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-# aquifer-frontend
+# Aquifer
 
-add description of aquifer-frontend here
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+## Summary
+
+A water consumption tracker running in the browser, written
+with [GHCJS]() and [Reflex FRP]().
+
+## Usage
+
+Browse to https://matthias.benkard.de/aquifer/ and make sure to have
+JavaScript enabled.
+
+Add drinks by clicking the _add drink_ button on the bottom of the
+page.
+
+Track your water consumption by checking the running total on the top
+of the page.  For a quick glance at how you're doing, look at the
+color of the top bar.  If the background is **red**, you haven't
+approached your daily goal yet.  If it is **yellow**, you are well on
+your way to reaching your daily goal.  If it is **green**, you're fine
+for today.
+
+## Implementation notes
+
+The application is written in Haskell, compiled with [GHCJS](), and
+based on the [Reflex FRP]() library.
+
+[Reflex FRP]: https://github.com/reflex-frp/reflex
+[GHCJS]:      https://github.com/ghcjs/ghcjs